Update presubmit.yml

Author: mmorel-35

modules/grpc-httpjson-transcoding/0.0.0-20230607-ff41eb3/presubmit.yml

@@ -22,6 +22,7 @@ tasks:
     platform: windows
     bazel: ${{ bazel }}
     build_flags:
-    - '/std:c++17'
+    - '--cxxopt=/std:c++17'
+    - '--host_cxxopt=/std:c++17'
     build_targets:
     - '@grpc-httpjson-transcoding//src/...'